for archlinux:
http://linuax.wordpress.com/2009/09/15/arch-linux-bootsplash-fbsplash/

if you use slackware you can use:
http://linuax.wordpress.com/2009/01/20/bootsplash-grafico-su-slackware-gnulinux/ and you can convert this theme for bootsplash patch with http://linuax.wordpress.com/2010/01/15/conversione-tema-bootsplash-in-fbsplash-bootsplash2fbsplash/